Automobile lifting device



March 29, 1927.

E. .KARow AUTOMOBIE LIFTING DEVICE Filed June 7. 1926 4 rdf' ssheets-smi 1 myENToR ATTORNESl 2 l v- March 9 927 E. KARow AUTOMOBILELIFTING DEVICE 5 Sheets-Sheet 2 v mailE/MM ATTORNEY Filed June '7'. 1926March 29 1 927.

E. KARow AUTOMOBILE LIFTING DEVICE Filed June 7. 1926 Sheets-Sheet 3INVENTOR BY o ATTnNEY March 2 9, 1927.

E. KAROW AUTOMOBILE LIFTING DEVICE 5 Sheets-Sheet 4 Filed June v'7. 1926\\\\\\\\\\\\\\l l1 k\\ \N.

ATTO R N EY March 29.' 14927. E. KARow AUTOMOBILE LIFTING DEVICE FiledJune 7. 192e 5 sheets-snaai s INVENTOR ATTCRNEY Patented VMar. 29, 1927.

UNITED STATES PATENT OFFICE. i'

EMIL KAROW, OF SARLES, NORTH DAKOTA, ASSIGNOR OF ONE-HALF TO ED GARWICK,

i OF SARLES, NORTH DAKOTA.

AUTOMOBILE LIFTING DEVICE.

Application mea June 7, 192s. serial No. 114,305.

The object of this invention is to provide a device for automaticallylifting a motor car when the latter is driven on to the apparatus, thelatter including a longitudinally movable element and means cooperatingtherewith for engagement by a car axle, said element acting to rock aplurality of horizontal shafts carrying cams which engage pivotallymounted levers extending beneath the axles of the car and adapted tolift the latter.

A further object is to provide controlling means of the type hereinafterdisclosed.

A further object is to provide wheel engaging means automatically thrownto operative position when the car is elevated,

said means being released by the operation of a hand lever.

lith the foregoing and other objects in view, the invention consists inthe novel construction and arrangement of elements described,illustrated and claimed, it being understood that modifications may bemade within the scope of the claims without departing from the spirit ofthe invention.

In the drawings forming part of this application,

Figure 1 is a top plan view of the construction.

Figure 2 is a bottom plan view.

Figure 3 is a. view in side elevation.

Figure 4 is also in side elevation, the elements below the car wheelshaving moved to lower position. 1

Figure. 5 is a view in longitudinal section;

Figure 6 is also in longitudinal section, the car lifting element havingbeen raised.

Figure 7 is a transverse section on line 7-7 of Figure 5.

Figure 8 is a detail view of certain rack and rack engaging meansdescribed below.

Figure 9 is a detail View in plan showing features of the constructiondescribed below.

Figure 10 is a detail view of an axle enf gagmg device.

Figure 11 is a verticle sectional view through the yoke 43.

The stationary portion of the structure includes a platform 10,vertically extending longitudinal bars or rails 11 and 12, and runways13 and 14. The platform 10 is mounted on transversely extending supportsor timbers 15 and 16, and extending from the ends" of the runways 13 and14 are pivotally mounted elements, such as 17, the pivotal connectionbeing effected by means of pins 18 passing thru ears 19. These elements17 provide inclined planes, permitting of the easy approach of the carand permitting the latter to leave the apparatus without perceptiblejarring movement.

Carried by the runways 13 and 14 are wheel vemga-ging devices eachcomprising a plurality of hingedly connected sections 20 and 21, thehinge or pivotal connection being designated 22, and one of theseelements having its outer end portion hin ed at 23 to the runway, whilethe other e ement or section 2O movable longitudinally vof the runway toa limited extent in view of a pin and slot connection, the pin beingdesignated and the slotvextending thru the runway being shown at 25.

Pins 24 may each constitute an eye bolt or the like, the eye portion 26having connection with a cord such as 27 passing over a winding deviceor sleeve, also constituting a winding drum and designated 428. Anothercord or chain 30 passes around vthis winding device 28 in the oppositedirection, and passes around a pulley or roller 31 mounted in a bracketor the like 32, the flexible element 3() having connection with an eyebolt 33 passing thru.v a slot 34 in the runway 14. This bolt or pin 33is connected with segment 20 of a wheel engaging device, such as thatpreviously described. and including besides element 20 a hingedlyconnected element 21', this device last named having the same functionas element 21 at the opposite end of the apparatus.

A similar construction is provided for runway 13, and it will beobserved that upon winding drum 28, the elements 20, 21 and elements 2Gand 21 will be elevated `to the position of Figure 3, a winding drum 28on the side of the apparatus opposite element 28, serving the samepurpose and having connection with a flexible device 30, as in the caseof the assembly on the side of the machine in which the operativeelements have been described in full.

Figure 7 shows the drums 28 and 28, and these elements each carryrigidly there-With clutch elements 36 cooperating with clutch elements37 rigid on horizontal shaft 38, the latter extending transversely ofthe mounting element or timber 15. Element 38 constitutes 'a rock shaft,and the sleeves 28 and 28 `are normally in operative relation With shaft38, so that when the latter is rocked sleeves or drums 28 and 28 Will berotated, for throwing upwardly the Wheel engaging devices comprisingelements 2O and 2l, and the other pairs of elements lof similarcharacter. The clutchesv are held in engagement by springs 39 and l39.

The end portions of the drums 28 and 28 are `notched and constituteWheels 40 and 40 for engagement by parvis 4l and 41 pivoted to the edgeportions of the runy'ays. The sleeves or drums 28 and 28 are furtherprovided with annular grooves such as 42 for engagement by yokes 43 and43. One ofthese yokes is connected With a rod 44 slidably mounted intransverse element 15of Athestationarystructure, and the yoke 43 isconnected with rod 44 slidable thru element 15 of the stationarystructure and having pivotal connection with the lower slotted end ofhand lever 45. This lever is fulcrumed at 46, and on the side of thepivotal point of this lever opposite to that Where 'connection iseffected with rod 44', a pin and "slot connection 47 is provided withrod 44. 1n View of the connections With lever on opposite sides of thepivotal point or fnlcrum, the yokes 43 and 43 and therefore the drums 28and 28 will be moved simultaneously in the direction required 'forreleasing the clutches at 36 and 37. bv slidable movement of the drumsouttvalij'dly'oi'i each side of the main structure. y `Shaft, 38 isrocked automatically when the 'car is driven onto the apparatus, andWhenengagement is effected with means for tliroivinp` to elevatingposition a plurality of aile-'liftinglevers designated 50 and eachpivotally mounted near one end in a stationa' y portion of thestructure, in the manner indicated at 5l. The position of elements '2Oand .21 and corresponding elements of eachpair is shown in Figure 3, theaxlelifting lever 50 having been raised. In Figure 4 the Wheelfengagingdevices 2O and 2l and Q0 and 2l on ythat side of the machine nearest theobserver have dropped to horiaontal position, preparatory to 'releasingthe ear, because the clutches `associated with the Winding drums 28 andV28 have been thrown out by hand lever 45. and the eleinentspon 'theopposite side of the appa.- ratas, which engaged the Wheels on vthatside, as in the case of devices 2O and 21, have also dropped tohorizontal position, because of the simultaneous release of the clutchcontrolledv drums, 'thru rods 44 and 44 vconnected with lever 45.

Axle engaging levers 50 are lifted by cams rigidly mounted on rockshafts 56 and 57. and Vguiding plates, such as 58, carried bythe 'camelements retain the free ends 50 of the levers in the required position,so that they are guided in their vertical movement. Shafts 56 and 57each carry a plate elen'ient 59 or 59 as the case may be, these devicesconstitutingl crank members having pivotal connection withlongitudinally movable bars 61 and 62. These bars are each provided withteeth as indicated at (33, and a device constituting a dog or paivl of'unusual form is designated 64, being pivotally mountedat 65 in abracket 66, and extending entirely across longitudinally movableelements (il and 62, spaced as shown, so that upon the operation of dog64 the hars 6l and 62 are engaged or released sinniltaneously.

VConnected with longitudinally movable bars 6l and 62or With one of Athebars are ineans for rocking shaft 38 mounting the drums 28 and 28. InFigure 7 this operation or connection for effecting the rocking of shaft38 is bv means of crank '68, and when the axle-lifting levers 50 areraised. Vshaft 38 is rocked for the purpose of lifting .vhe'el engaginf"devices 2O 'and 2l as before indicated, and as shown in Figure 3. y y

A forked arin .70 is engaged hy axle 7l of the car, ivhen the latter isdriven on to the apparatus. Lever or arin 7() is pi voted at 72. andapertures or recesses T 3 in the side'of clement TO are engaged Aby, aspringhe'ld pin 74. acting 'as a holding device for J'he `element v70. Y

A 'slide T5 is movable longitudinally in channeled element and ispivotally connected by 'means of link or'the like 77 Vand a short linkor hinge connection at 78, with plate member 59" which constitutes acrank operating device for rocking shaft 57.

Slide 7 5 also mounts 'a resilientmember 80, havingan upper lflatsurface, and having an angular or bent-over portion 8l for engagementbythe Alower end of arm 70. This resilient element further includes ahorizontally extending portion '82 extending under transverse 'pin orbar 88, the ends of which project thru slots 84 in the sides of thechannel element 76.

The resilient element including portion 8O is connected with the Vslide75 by means of pin 85, and this connection being somewhat loose, theoperation of the resilient device is controlled in part by spring 86surrounding pin 87, the spring bearing on the upper surface o f element80. The 'lower portion of'pivoted arm 70 includes a curved or camsurface 70 adapted to engage the angular' portion of the resilientdevice, 'permitting one of these elements to pass the other in a mannerwell understood,but when the pivoted element 70 and resilient arm 8O andits angularportionSO are in the position of Figure 5 there is engagementof a positive character, and assuming that the car is moving towards theleft, the axle 7l engaging the forked portion of arm 7 0, the slide 75will be thrown toward the right, and will throw crank 59 and thereforerock sha-ft 57 moving the cams 58 carried thereby to upper position forraising axle-lifting levers 50. The same operationresults at theopposite end of the apparatus, because of the rocking of shaft 56 andthe raising of the cams carried thereby.

The dog 6a is controlled by crank arm 64 carried by rock shaft Gil. Anarm G5 connected with. shaft 64e is controlled by hand lever 4-5, thislever extending alongside of lever and within convenient reach of theoperator, who need not leave the car in order to control or operateeither hand lever. V

Tripping arm or pivoted arm is shown in Figure 5 in position forengagement by the car axle in moving` onto the lifting de* vice, and inFigure G the tripping arm having been thrown by the forward movement ofthe car, is in position for being thrown in the opposite direction whenthe car is backed off and the axle 7l engages the fork of the pivotedarm or tripping arm 70. The lower end of element 70 will pass the angleportion of the resilient device 80, and the element 50 will be inposition for a new operation. In lowering the car the release of dog orholding element 64e permits longitudinal bars 61 and 62 to move to theleft under the weight of the car on axle-lifting levers 50 which returnto normal position by gravity.

Having described the invention what is claimed is l. In a device of theclass described, a plurality of pivotally mounted axle-lifting levers,cams engaging the levers, rock shafts mounting and operating the cams, alongitudinally movable device operatively connected with the rockshafts, and wheel engaging devices operatively connected with thelongitudinally movable device and automatically thrown to operativeposition upon the elevation of the levers by the cams.y

2. In a device of the class described, a plurality of pivotallymountedaxle-lifting levers, cams engaging the levers, rock shafts mounting andoperating the cams, a longitudinally movable device operativelyconnected with the rock shafts, a tripping arm for engagement by an axlefor shifting the longitudinally movable device, and wheel engagingdevices operatively connected withthe longitudinally movable device andautomatically thrown to operative position upon the elevation of thelevers by the cams.

3. In a device of the class described, a plurality of pivotally mountedaxle-lifting levers, cams engaging the levers, rock shafts mounting andoperating the cams, a longitudinally movable device operativelyconnected with the rock shafts, a tripping arm for engagement by anaxle, a resilient element carried by the longitudinally movable devicefor positive engagement by the trippinoarm upon movement of the latterin one direction, and wheel engaging devices operatively connected withthe longitudinallyy movable device and automatically thrown to operativeposition upon the elevation of the levers by the cams.

1l. In a device of the class described, a plurality of pivotally mountedaxle-lifting levers, cams engaging the levers, rock shafts mounting andoperating the cams, a longitudinally movable device operativelyconnected with the rock shafts, and wheel engaging devices operativelyconnected with the longitudinally movable device and automaticallythrown to operative position upon the elevation of the levers by thecams, and means including cable winding and unwinding mechanism forreleasing the wheel engaging devices.

5. In a device of the class described, a plurality of pivotally mountedaxle-lifting levers, cams engaging the levers, rock shafts mounting andoperating the cams, a longitudinally movable device operativelyconnected. with the rock shafts, and wheel engaging devices eachcomprising a plurality of pivotally connected sections simultaneouslyoperated, and operatively connected with the longitudinally movabledevice for automatic operation with said levers.

6. In a device of the class described, a plurality of pivotally mountedaxle-lifting levers, cams engaging the levers, rock shafts mounting` andoperating the cams, a longitudinally movable device operativelyconnected with the rock shafts, and wheel engaging devices operativelyconnected with the longitudinally movable device and automaticallythrown to operative position upon the elevation of the levers by thecams, a pivotally mounted axle operated element, and means for operatingthe longitudinally movable element by the axle operated element.

7. In a device of the class described, a plurality of pivotally mountedaxle-lifting levers, cams engaging the levers, rock shafts mounting andoperating the cams, a longitudinally movable device operativelyconnected with the rock shafts, and wheel engaging devices operativelyconnected with the longitudinally movable device and automaticallythrown to operative position upon the elevation of the levers by thecams, a pivotally mounted forked arm positioned for engagement andoperation by a car axle, and an angular resilient member on thelongitudinally movable device and engaged by the forked arm.

llO

8. In a device of the class described, a f

supporting structure including runways, a plurality of pairs of elementsmounted on E Lemgo@ the runways, each pair comprising pvota'll'yconnected sections, one 'of *the sections of each pair having -slda'bleconnection with the :runway `ou which it is carried., 'u shaft and.means .for rocking the lshaft upon movement o' a car onto he Structure,r-exib'le members and Winding devices therefor, Said flexible membershaw/'ing connection with the p'vcted and -slidable yelements mounted onthe 'runways and clutch mechanism between 10 the :shaft :md each windingdevice.

In testimony whereof fI alx my signature.

EMIL KAROW.

